Coil ignition apparatus  for internal combustion engines



Oct. 27,19z5. I I 1,559,457

D. A. V. RIST COIL IGNITION APPARATUS FOR INTERNAL COMBUSTION ENenms' Filed May 31, 1921 z-sheets-sneex .I.

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Oct. 27, 1925. 5 1,559,457

D. A. V. RlST COIL LGNITIQN APPARATUS FOR INTERNAL COMBUSTION ENGINES Filed May 31, 1921 2 Sheets-Sheet 2 Alfarnoy:

Patented Oct. 27, 1925.

UNI ED "s rArEs PATENT "OFFICE. I

COIL-IGNITION arram'rus non INTERNAL-COMBUSTION ENGINES.

Application filed May 31,

To all whom it may concern:

Be it known that I, DAVID ALBERT Vro'ron RIs'r, of Victoria Works, South Road, New Southgate, London, England, whose post-- oflice address is Victoria Works, South" Road, New Southgate, London, England, a subject of the King of Great Britaln, have invented certain new and useful Improvements in or Connected with Coil-Ignition Apparatus for Internal-Combustion Engines, of which the following is a specification.

This invention forimprovements in coil ignition apparatus for internal combustion engines has for its object to provide a compact ignition unit including an inductlon coil contact breaker, distributor and condenser, that shall be simple in construction, highly eflicient and readily applicable in place of magnetos as at present used.

Another object is to enable the coil to be rendered inoperative at will and locked in the inoperative condition with a view to preventing theft of or the unauthorized use of any vehicle upon which it may be employed.

-A further object is to enable stampings to be used for incasing or housing the principal partsthereby facilitating production or standardization. 0

It has been proposed to construct a coil ignition unit comprising two or more vertical shafts carrying the moving parts of distributer and timing mechanism and geared with a horizontal drive shaft, the shafts together with the distributer and timing mechanism being enclosed in a housing capable of being seated on the usual magneto base.

According to the present invention, the drive and distributer shafts of the igniter are mounted horizontally and parallel with one another and the coil which is also horizontally disposed, the condenser, and the Y driving gear of the distributer and contact breaker including the aforementioned shafts,

* are enclosed in a casing or housing the arrangement being such that the induction or sparking coil only requires at most two external wires for the low tension circuit all the other low tension wires being enclosed in the housing or cover of the apparatus.

The casing is also provided with a connector for a lamp and with a locking de- "tor removed.

1921, Serial No. 474,001.

, vice with hey arranged to separate contacts -1n the casing to break-the low tension cir cult and'thus renderfithe coil: inoperative when desired. v InQa practical form of construction the casing or housing is mounted on a magneto 1 type of base above which the drive shaft and distributor shaft geared thereto to revolve at half the speed. of the engine shaft are mounted in ball bearings. The coil'is supported above and parallel with the shafts,'the shafts and' coilbeing disposed horizontally in the casing whilst the distributor and contact breaker which are also horizontally disposed are either inside or outside the casing. It is important that the condenser should be housed in the casing and it is preferably placed just above the base.

'The lock comprises a bolt ormovable member controlled by a kc and arranged to act on one of a pair 0 spring contact blades. A A visual indicator such as a lamp may be provided to give an indication if the primary circuit of the ignition should be left closed when the engine is stopped, and a switch operated by thermostatic, magnetic. or mechanical means may also be provided for opening the circuit to prevent the ex haustion of the battery.

Itwill ,readily be understood that the ignition apparatus as described is well adapted for use on cars equipped with electric lighting sets where it can be installed with advantage in place of the magneto and has in the storage battery a constant and reliable source of current. 1 i

In theaccompanying two sheets of illustrative drawings,

Fig. 1 is a side elevation of coil ignition apparatus constructed according to this invention.

Fig. 2 is an end elevation of the same.

Fig. 3 is a longitudinal sectional elevation.

Fig. 4 is a similar view to Fig. 2 but with the insulating cap portion of the distribu- Fig. 5 is a transverse section at 55 Fig. 3.

As shown the ignition unit is made so as to be interchangeable with a magneto with out requiring any alteration in the engine arrangements and comprises a casing or I carrying a pinion g engaging with as a distributor shaft andthe shaft f as a drive shaft, the two shafts being geared together by these spur wheels 9, g to actuate the distributor h and contact make-and- -break i which are of any suitable construe tion. v

It will be seen that the arm h controlling the advance and retard comes into thesame position as it would onthe contact maker of a magneto and no extra mechanism is necessary for the operation of this arm.

Theinsulating cap portion of the distributor is held on by two spring catches a and can be easily removed by pressing back the catches.

In the bottom of the casing just over the base is fitted the condenser which only requires a very short connection j an important advantage in avoiding electrical leakage.

At the upper part of the casing above the shafts the'coil k is supported horizontally for which purpose it is provided with hook ended bar 1 engaging over horizontal rods m extending between the end plates. From the high tension circuit runs a single heavily insulated lead 92 with plug 0 which is inserted in a socket or sleeve in the centre of the distributor. For the purpose of locking the ignition unit against use by any unauthorized person a lock 79 of the Yale type is arranged to open and close a switch on the distributor end of the casing the barrel of the look a movable rack r mounted to slide in a slotted bar and carrying a striking piece 8 of insulating material fixed to the rack by screws, the striking piece being moved against or away from one of a pair of contact blades 25 to close or separate the contacts.

On' one end-plate of the casing a plug socket c for an inspection lamp is arranged through which current is conveniently obtained fromthe distributor or coil connection when a light is required for use round.

forv connection with the magneto operating shaft of an engine, a distributor operating shaft rotatably mounted in said housing and rotated from said drive shaft and extending through the other end of said housing for operating said distributor and circuit breaker when rotated, a fixed sparking coil mounted in said housing and having'operative connection with said distributor, said coil being supplied with current from a storage battery, and a condenser mounted in said housing and having operative connection with said coil.

2. A coil and distributor unit for mounting in place of the magneto of an internal combustion engine and comprising a housing having forward and rear walls, a distributor mounted upon the outer face of the forward wall, a fixed sparking coil in the upper portion of said housing, a conductor extending from said coil out of said housing and provided with a terminal plug having connection with the distributor, a distributor shaft in said housing beneath said coil extended through the forward wall for operating said distributor when rotated, a drive shaft in the housing beneath the distributor shaft and operatively,connected with the distributor shaft for imparting rotary movement to the same and extended through the rear wall for connection with the magneto operating shaft of an engine, and a condenser in the lower portion of the housing and having operative connection withsaid (3011.

In testimony whereof he has affixed his signature.

DAVID ALBERT VICTOR RIST. 

